Patent application number | Description | Published |
20090111633 | METAL V-BELT - A metal V-belt includes a plurality of metal elements supported by a metal ring. The metal ring includes front and rear main surfaces, a pair of left and right slots that receive the metal ring therein, the slots being defined between a saddle surface and an ear-part bottom surface. A protrusion is provided on one of the front and rear main surfaces, and a concavity is provided in the other of the front and rear main surfaces. A clearance defined between an outermost peripheral surface of the metal ring and the ear-part bottom surface of the metal element is set to a value that at an exit of a driven pulley, contact of the innermost peripheral surface of the metal ring with the saddle surface of the metal element, and contact of the protrusion of a succeeding metal element and the concavity of a preceding metal element is avoided. | 04-30-2009 |
20090111634 | METAL BELT FOR CONTINUOUSLY VARIABLE TRANSMISSION - Although a radial outside portion of a metal ring contact surface of a neck section of a metal element which is contactably opposed to a side edge of a metal ring of a metal ring assembly has high frequencies of contacting with a side edge of the metal ring, it is possible to suppress abrasion of the side edge of the metal ring and to improve durability of the metal ring by setting a surface hardness of the radial outside portion lower than a surface hardness of the metal ring. In addition, by setting a surface hardness of the metal ring contact surface at its portion of the radial outside lower than the surface hardness of the metal ring contact surface at other portions thereof where the frequencies of contacting with the side edge of the metal ring becomes low, in comparison with a case of setting the surface hardness of the whole metal ring contact surface low, it is possible to increase strength of the metal element and to improve the durability of the metal element. | 04-30-2009 |
20120304726 | METHOD OF MANUFACTURING PULLEY COVER IN CONTINUOUSLY VARIABLE TRANSMISSION - An oil hole penetrating through a partition wall of a pulley cover of a continuously variable transmission is formed in a direction perpendicular to an axis of the pulley cover. The pulley cover, having first and second hydraulic oil chambers through which a movable pulley half of a pulley of the continuously variable transmission is biased toward a fixed pulley half thereof, is manufactured in the step of machining a metal sheet. The manufacturing step includes a first step of press-forming the annular partition wall of the pulley cover, a second step of opening the oil hole in the partition wall, the oil hole allowing communication between the first and second hydraulic oil chambers, and a third step of press-forming the peripheral wall of the second hydraulic oil chamber at an outer side, in a radial direction, of the partition wall. | 12-06-2012 |
20130035188 | HYBRID DRIVE APPARATUS - In a hybrid drive apparatus having an engine, a motor generator, and a planetary gear mechanism in which the output shaft of the motor generator is coupled to a sun gear, the output shaft of the engine is coupled to a ring gear, and the input shaft of a continuously variable transmission mechanism is coupled to a carrier, the hybrid drive apparatus includes a first clutch that can switch engagement/disengagement between the output shaft of the engine and the ring gear, a second clutch that can switch engagement/disengagement between the carrier and the ring gear, and a third clutch that can switch engagement/disengagement on the input shaft of the transmission mechanism. Consequently, the power transmission path for the driving force from the engine can be separated from the power transmission path between the motor generator and drive wheels, and various driving modes can be set while improving power transmission efficiency. | 02-07-2013 |
20130312675 | HYDRAULIC CONTROL APPARATUS FOR CONTINUOUSLY VARIABLE TRANSMISSION - In a hydraulic control apparatus for a continuously variable transmission that enables gear ratio variation by controlling supply of hydraulic oil to first and second hydraulic actuators, there are provided with first and second oil passages connecting the first and second actuators to a reservoir, a single electric hydraulic pump installed at a common portion thereof, first and second check valves installed in the first and second oil passages for blocking flow of hydraulic oil to the reservoir, first and second bypass passages formed in the first and second oil passages, a control valve installed therebetween, a fourth check valve installed in the first and second bypass passages for blocking flow of hydraulic oil to the hydraulic pump, and a controller for controlling these, thus readily enabling a configuration that reduces the number of electric hydraulic pumps to one and minimizes cost increase. | 11-28-2013 |
20140235381 | ENDLESS POWER TRANSMISSION BELT-TYPE CONTINUOUSLY VARIABLE TRANSMISSION - Among V-faces ( | 08-21-2014 |
20150276016 | METAL BELT FOR CONTINUOUSLY VARIABLE TRANSMISSION - A metal belt is wound around a drive pulley and a driven pulley of a continuously variable transmission. Since intervals between multiple adjuster metal element groups are set so as to avoid that the number of the adjuster metal element groups simultaneously existing on a driving-side chord portion of the metal belt between the drive pulley and the driven pulley is 2 or more, it is possible to prevent large vibration which would occur if two or more adjuster metal element groups would exist on the driving-side chord portion of the metal belt. Furthermore, since the multiple adjuster metal elements are distributionally disposed in the multiple adjuster metal element groups, it is possible to decrease imbalance among the adjuster metal element groups, compared with a case where all the adjuster metal elements are disposed in a single adjuster metal element group. Thereby, the vibration can be reduced more. | 10-01-2015 |
20160053852 | METAL BELT FOR CONTINUOUSLY VARIABLE TRANSMISSION - A metal belt for a continuously variable transmission includes a metal element wound around a drive pulley and a driven pulley and transmits a driving force between the two pulleys, in which a rocking edge is provided at the radially outer end of a front face of a body part. The rocking edge being a fulcrum for pitching of the metal element, and a recess is formed in a rear face of a neck part, and therefore, when the metal element on the rear side is displaced toward the radially outer side with respect to the metal element on the front side, the rocking edge of the metal element on the rear side enters a ring slot and the recess of the metal element on the front side, and the metal element on the rear side moves so as to be closer to the metal element on the front side. | 02-25-2016 |
20160102732 | METAL BELT FOR CONTINUOUSLY VARIABLE TRANSMISSION - In a metal belt for a continuously variable transmission having a saddle face of a metal element and a rocking edge positioned at substantially the same position in the radial direction, a rocking edge is provided at a radially outer end of a front face of a body part, the rocking edge being a fulcrum for pitching of the metal element of the metal belt which is wound around a drive pulley and a driven pulley and transmits a driving force between the two pulleys, and a recess is provided extending from a front face of a neck part to a front face of the body part. Thus, it is possible to minimize a space created between the front and rear metal elements and reduce the bending stress applied to the metal elements, thereby minimizing degradation of the power transmission efficiency. | 04-14-2016 |